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jkaufman comments on Announcing the 2014 program equilibrium iterated PD tournament - Less Wrong Discussion

24 Post author: tetronian2 31 July 2014 12:24PM

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Comment author: jkaufman 31 July 2014 02:34:54PM 2 points [-]

How is the tournament going to work in terms of what plays what? Is every bot going to play against every other bot? Is there a big pool, where successful bots get more copies and then we run for a while? Can a person submit multiple bots?

The best strategy depends heavily on the expected opponents. For example, a bot that tries to detect itself in order to cooperate only makes sense if it might play itself.

Comment author: tetronian2 31 July 2014 02:40:34PM *  6 points [-]

Excellent questions. Here are the rules pertaining to the tournament structure (from the readme):

One submission per person.

The tournament will be round-robin elimination: Each bot will play one match against all other bots, where a match consists of 100 rounds of the prisoner's dilemma. At the end of the round-robin round, the lower-scoring half of the tournament pool will be eliminated. This process will be repeated until only one bot remains, or there is a tie. The whole tournament will be run 1000 times, and the bot that places first most frequently will be declated the overall winner.

In other words, bots do not play against themselves, but they will play against all other bots at least once per tournament iteration. Let me know if this is unclear. (This setup was suggested to me by James Miller.)

Comment author: philh 31 July 2014 06:16:32PM 3 points [-]

To clarify: your score in each round-robin round is the sum of your scores from each of the matches; and this score doesn't carry over to the next round-robin round?

Comment author: tetronian2 31 July 2014 06:18:12PM 5 points [-]

Exactly right.

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